Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2007-01-30
2007-01-30
Pak, Sung (Department: 2874)
Optical waveguides
With optical coupler
Input/output coupler
Reexamination Certificate
active
10885659
ABSTRACT:
A method for fabricating fiber Bragg gratings including: scanning a photosensitive optical fiber with ultraviolet laser light in a longitudinal direction of the optical fiber by means of a phase mask method, thereby forming periodic refractive index modulation structure in a core of the optical fiber in the longitudinal direction; and instantaneously moving a phase mask used in the phase mask method by a predetermined distance in the longitudinal direction, thereby forming a phase shift portion in the periodic refractive index modulation structure formed in the core of the optical fiber, when a radiation position of the ultraviolet laser light reaches a predetermined position, in the middle of the scanning step using the ultraviolet laser light.
REFERENCES:
patent: 5914207 (1999-06-01), Nishiki et al.
patent: 6072926 (2000-06-01), Cole et al.
patent: 6456762 (2002-09-01), Nishiki et al.
patent: 6804437 (2004-10-01), Murashima et al.
patent: 2003/0012502 (2003-01-01), Riant et al.
patent: 2003/0156791 (2003-08-01), De Groot
patent: 11-142659 (1999-05-01), None
Toru Mizunami, “Optical Fiber Bragg Gratings”, Oyo Buturi, vol. 67, No. 9 (1998), pp. 1029-1034.
Akihiko Nishiki et al., “Development of Encoder/Decoder for OCDM using a SSFBG: A Verification of data-rate Enhancement Method”, The Institute of Electronics, Information and Communication Engineers (IEICE), Technical Report of IEICE. OFT2002-66 (Nov. 2002), pp. 13-18.
W.H. Lohet et al., “Complex grating structures with uniform phase masks based on the moving fiber scanning beam technique”, Optics Letters, vol. 20, No. 20, Oct. 15, 1995, pp. 2051-2053.
Nishiki Akihiko
Sasaki Kensuke
Oki Electric Industry Co. Ltd.
Pak Sung
Rabin & Berdo P.C.
Wong Tina M.
LandOfFree
Method and apparatus for fabricating fiber Bragg gratings does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for fabricating fiber Bragg gratings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for fabricating fiber Bragg gratings will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3721482